December weather forecast
Jocoro, El Salvador

December, the first month of the winter in Jocoro, is still a tropical month, with an average temperature ranging between max 32°C (89.6°F) and min 20°C (68°F).

Temperature

The arrival of December denotes a barely perceptible change in the average high-temperatures to a still tropical 32°C (89.6°F) from November's 31.5°C (88.7°F). Throughout December nights, Jocoro reports a steady thermal contrast from the day, with an average low-temperature of 20°C (68°F).

Heat index

December's mean heat index is calculated to be a sweltering 39°C (102.2°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The average relative humidity in December is 65%.

Rainfall

In Jocoro, during December, the rain falls for 4.2 days and regularly aggregates up to 5mm (0.2") of precipitation. In Jocoro, during the entire year, the rain falls for 188.7 days and collects up to 986mm (38.82") of precipitation.

Daylight

December has the shortest days of the year, with an average of 11h and 18min of daylight.
On the first day of the month, sunrise is at 06:00 and sunset at 17:22. On the last day of December, sunrise is at 06:15 and sunset at 17:35 CST.

Sunshine

December has the least sunshine of the year, with an average of 7.4h of sunshine.

UV index

The months with the highest UV index are January through August, November and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the UV index of 7 transforms into the following advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Tightly woven clothing, when worn loosely, shields effectively against the Sun.